Improvement in calendars



FZEICE WILLIAM W. KITCHEN, OF GRIMSBY, ONTARIO, CANADA.

IMPROVEMENT IN CALENDARS.

Specification forming part of Letters Patent N 0. 188,248, dated March 13, 1877 application filed October 26, 1876.

To all whom it may concern Be it known that 1, WILLIAM W. KITCHEN, of Grimsby, in the Province of Ontario and Dominion of Canada, have invented an Improved Perpetual Galendar, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, and the letters of reference marked thereon, making part ofthis specification, in which- Figure 1 is a front plan view. Fig. 2 is a longitudinal'sectional view. Fig. 3 is a rear plan view.

The object of my invention is the formation of a perpetual calendar, which will always in dicate the day of the week upon which any month begins.

The nature of my invention consists in constructin g the dial-plate with two divisions, one containing figures and letters, and the other containing figures alone, and in pivoting to the center of the dial-plate the dial on the margin of the face of which are marked the initial letters of the days of the week.

The construction and operation of my invention are as follows: A is the dial-plate. As shown in the drawing, it is circular in form, but it may be constructed in any form that is convenient, and out of any suitable material. The face of this dial-plate A is divided into two circles, A A In the circle A are arranged the initial letters of the months of the year, in consecutive order, with a figure attached to each letter, as shown in Fig. 1, no figure being higher than the figure 7. In the-inner circle A are arranged, in consecutive order, thenumerals from 1 to 7.- To the center of the dial-plate is pivoted, by a pin, 0, the dial B. Around the edge of the face of this dial is arranged the initial letter of the days of the week. These letters, as the dial is moved ception to this is leap-year, when the initial 4 letter of the day of the week that March begins on must he set opposite to the figure 4, when the calendar is fixed for the last eight months of that year.

Now, to find the day of the week upon which any month begins, you look for the initial letter of the month in the outside circle A and note the figure attached to the same.

then find that figure in the inner circle A and the initial letter on the dial corresponding thereto will give the day of the Week. 4

What I claim as new, and desire to secure by Letters Patent of the United States, i's

A perpetual calendar, consisting of the dialplate A, having letters and figures arranged thereon as shown, and the dial B, hav ,ng letters arranged thereon as shown, so arranged that the day of the week upon which any year begins being known, the day of the week upon .gvhich each month commences can be ascerv tnined, substantially as described.

In testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing'witnesses.

WILLIAM W. KITCHEN. Witnesses:

A. S. WILSON, E. P. MORELAND. 

